Results 1 to 10 of about 27,260 (133)

Genetic evidence for inhibition of bacterial division protein FtsZ by berberine. [PDF]

open access: yesPLoS ONE, 2010
BACKGROUND: Berberine is a plant alkaloid that is widely used as an anti-infective in traditional medicine. Escherichia coli exposed to berberine form filaments, suggesting an antibacterial mechanism that involves inhibition of cell division.
Jaroslaw M Boberek, Jem Stach, Liam Good
doaj   +1 more source

ruvA Mutants that resolve Holliday junctions but do not reverse replication forks [PDF]

open access: yes, 2008
RuvAB and RuvABC complexes catalyze branch migration and resolution of Holliday junctions (HJs) respectively. In addition to their action in the last steps of homologous recombination, they process HJs made by replication fork reversal, a reaction which ...
A Blastyak   +68 more
core   +11 more sources

Time-Series Chlorophyll Fluorescence Imaging Reveals Dynamic Photosynthetic Fingerprints of sos Mutants to Drought Stress

open access: yesSensors, 2019
Resistance to drought stress is one of the most favorable traits in breeding programs yet drought stress is one of the most poorly addressed biological processes for both phenomics and genetics.
Dawei Sun   +4 more
doaj   +1 more source

An Activating Mutation in sos-1 Identifies Its Dbl Domain as a Critical Inhibitor of the Epidermal Growth Factor Receptor Pathway during Caenorhabditis elegans Vulval Development [PDF]

open access: yes, 2007
Proper regulation of receptor tyrosine kinase (RTK)-Ras-mitogen-activated protein kinase (MAPK) signaling pathways is critical for normal development and the prevention of cancer.
Elgort, Marc G.   +7 more
core   +2 more sources

An Inquiry-Based Laboratory Module to Promote Understanding of the Scientific Method and Bacterial Conjugation

open access: yesJournal of Microbiology & Biology Education, 2014
Students are engaged and improve their critical thinking skills in laboratory courses when they have the opportunity to design and conduct inquiry-based experiments that generate novel results.
Melanie B. Berkmen   +2 more
doaj   +1 more source

Virus satellites drive viral evolution and ecology [PDF]

open access: yes, 2015
Virus satellites are widespread subcellular entities, present both in eukaryotic and in prokaryotic cells. Their modus vivendi involves parasitism of the life cycle of their inducing helper viruses, which assures their transmission to a new host. However,
Buckling, Angus   +8 more
core   +1 more source

Transcriptional profiling of colicin-induced cell death of Escherichia coli MG1655 identifies potential mechanisms by which bacteriocins promote bacterial diversity [PDF]

open access: yes, 2004
We report the transcriptional response of Escherichia coli MG1655 to damage induced by colicins E3 and E9, bacteriocins that kill cells through inactivation of the ribosome and degradation of chromosomal DNA, respectively. Colicin E9 strongly induced the
Hinton, Jay C. D.   +6 more
core   +2 more sources

MutS regulates access of the error-prone DNA polymerase Pol IV to replication sites: a novel mechanism for maintaining replication fidelity [PDF]

open access: yes, 2016
Translesion DNA polymerases (Pol) function in the bypass of template lesions to relieve stalled replication forks but also display potentially deleterious mutagenic phenotypes that contribute to antibiotic resistance in bacteria and lead to human disease.
Argaraña, Carlos Enrique   +4 more
core   +1 more source

A novel antibacterial peptide derived from Crocodylus siamensis haemoglobin hydrolysate induces membrane permeabilization causing iron dysregulation, oxidative stress and bacterial death [PDF]

open access: yes, 2017
Aims A novel antibacterial peptide from Crocodylus siamensis haemoglobin hydrolysate (CHH) was characterized for antimicrobial activity. Methods and Results CHHs were hydrolysed for 2 h (2 h-CHH), 4 h (4h-CHH), 6 h (6 h-CHH) and 8 h (8 h-CHH). The
Adje   +29 more
core   +2 more sources

Signal Enhancement by a Multi-layered Substrate for Mutagen Detection Using an SOS Response-induced Green Fluorescent Protein in Genetically Modified Escherichia coli

open access: yesAnalytical Sciences, 2011
In this paper, we describe a method to enhance the fluorescence signal of mutagen detection using SOS response-induced green fluorescence protein (GFP) in genetically modified Escherichia coli using a multi-layered substrate. To generate E. coli that express SOS response-induced GFP, we constructed a plasmid carrying the RecA promoter located upstream
Hiroki, Etoh   +2 more
openaire   +3 more sources

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